Microsystem Technologies

, Volume 25, Issue 2, pp 423–430 | Cite as

The piezoresistance of a device with polyphenylenevinylene derivative PSS-PPV film

  • Jie Li
  • Yu-xuan Hou
  • Yu-yan Wang
  • Fei Ye
  • Gao-yu ZhongEmail author
Technical Paper

The mechanical and electrical characteristics of poly[1-methoxy-4-(3-propyloxy-heptaisobutyl-PSS)-2,5-phenylenevinylene] (PSS-PPV) film were studied in this work. The loading curves and Young’s modulus of PSS-PPV film were measured with nanoindentation tests. The device ITO/PSS-PPV (75 nm)/Al (100 nm) was fabricated and measured to obtain the current–voltage (I–V) and current-time (I–T) curves under different pressures ranging in 0–163 kPa. The device demonstrated high sensitivity, good stability, and nice repeatability. The piezoresistance coefficient can even reach 2.0 × 10−3 Pa−1 at 0.2 V and 111 kPa. The time and charges required to form a stable build-in electric field in the device under different pressures were analyzed using a high-frequency square-wave voltage. It is deduced that the applied pressure not only tightens the PSS-PPV film but also improves its conductance. This property makes PSS-PPV film possess prospect in pressure sensing applications, though it still suffers from partly slow recovering after considerable compression.



This work was financially supported by the National Natural Science Foundation of China under Grant 51373036 and 11134002.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Materials ScienceFudan UniversityShanghaiChina

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